code: def generate_request_id():
      import uuid
  
      return uuid.uuid4().hex
  
file_path: ray/python/ray/workflow/examples/comparisons/cadence/trip_booking_workflow.py
imports: from typing import List, Tuple, Optional
  import ray
  from ray import workflow
label_desc: Use image node_id 2 for calling a global function with example usage: generate_request_id() and returns: uuid